A lot of antimalware programs will tell you to uninstall your other existing antimalware programs. Maybe uninstalling and reinstalling the other antimalware program after you install Kaspersky’s will work. I don’t think it’s a good idea to run more than antimalware program at the same time with both having real time protection. You might be able to make the other program a strictly on demand antimalware scanner. That is what I have done with both Adaware Antivirus (this program automatically installs so it won’t conflict with an already existing antimalware program) and Malwarebytes Antimalware Free.